package kk.learn.javat.smallboot.web;

import kk.learn.javat.smallboot.test.AppConfig;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;

/**
 * <p>
 *
 * </p>
 *
 * @author KK
 * @since 2021-09-02
 */
public class SmallWebApplicationInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletCxt) {
        // 完成AppConfig的注册，并基于java代码的方式初始化DispatcherServlet
        // Load Spring web application configuration
        //通过注解的方式初始化Spring的上下文
        AnnotationConfigWebApplicationContext ac = new AnnotationConfigWebApplicationContext();
        //注册spring的配置类（替代传统项目中xml的configuration）
        ac.register(AppConfig.class);
        ac.refresh();

        // Create and register the DispatcherServlet
        //基于java代码的方式初始化DispatcherServlet
        DispatcherServlet servlet = new DispatcherServlet(ac);
        ServletRegistration.Dynamic registration = servletCxt.addServlet("app", servlet);
        registration.setLoadOnStartup(1);
        registration.addMapping("/app/*");
    }
}
